How to show concrete type instead of var in variable declaration
Answered
I have read a hint somewhere how to configure the Java editor to show concrete types instead of var like this:
Class myClass = new Class(); instead of var myClass = new Class();
and not as inlay hint. There is also a special highlighting for this. have configured this in a preview installation of IntellJ. Today i deinstalled the installation because the new version was released and i didn't saved the configuration. Now i can't find the hint anymore and also can't remember which configuration option i changed. Can anyone tell me how to configure this?
Kind Regards
Andreas
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Hello, please see the following option: Preferences | Editor | General | Code Folding | Replace var with inferred type. Thank you
Hi Olga,
thanks for the help. It's not quite obvious that the option is placed under "Code folding". I looked at "Code Completion", "Code Editing" and "General". I didn't think about searching for "inferred type" 😒, but i searched for "replace var" (without hyphen) and nothing was found. Maybe you could improve this a little bit. I find this option extreme helpful, specially because our Sonarqube rules enforces using var instead of concrete types.
Kind Regards
Andreas
Hi Andreas,
Please clarify what version of IntelliJ IDEA do you use? The following search works for me:
until yesterday i used 2021.1.3. I just upgraded to 2021.2 and now it works.
Great! Thank you for confirming it works👍
I'm using Intellij IDEA 2023.3.2 Ultimate and I have enabled the “Replace ‘var’ with inferred type” option for Java. However, when I use Ctrl-Alt-V to create a variable it still comes up with "final var". Is there some other option I have to enable?
Wvanalbada please check if you have “Use ‘var’ for local variables declaration” enabled in “Settings | Editor | Code Style | Java | Code Generation”
Thank you Sergei! That was the problem indeed.
Hi Olga Klisho
could you please advice how I can create variable with var in one place and with exact type in another place, any shortcuts?
because the setting mentioned above works for all 'create variable actions' - how can I say what I need for each case - when I create a variable?
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IntelliJ IDEA 2024.1.1 (Ultimate Edition)
Hello,
You may try using the “Replace ‘var’ with explicit type” intention:
thank you!
IntelliJ IDEA 2024.2.0.2 (Ultimate Edition), Windows 10
When I search “replace var”, “Code folding” still not show
Hi 1120718914 Can you share a screenshot of page File | Settings | Editor | General | Code Folding ? It shuld be the same as https://intellij-support.jetbrains.com/hc/en-us/community/posts/4404384514834/comments/4404424975250. I'm using IDEA 2024.2.1.
Jacky Liu I have already upgrade to 2024.2.1, it works. So I cannot show you a picture. And yes, in 2024.2.0.2, “code folding” not show when search, but “code folding” absolutely is there.